| Title |
Effect of Nickel Silicide Content on the Friction Properties of Wet Sintered Friction Material |
| Authors |
박태형(Tae-hyung Park); 김상욱(Sang-wook Kim); 김종균(Jong-kyun Kim); 현승균(Soong-keun Hyun) |
| DOI |
https://doi.org/10.3365/KJMM.2022.60.2.95 |
| ISSN |
1738-8228(ISSN), 2288-8241(eISSN) |
| Keywords |
wet sintered friction material; nickel silicide; hardness; friction coefficient; wear rate |
| Abstract |
The effect of nickel silicide on the friction properties of Cu-based wet sintered friction materials was investigated. The microstructure and mechanical properties of nickel silicide added Cu-based wet sintered friction materials were examined. Nickel silicide was prepared by mechanically alloying Ni and Si powder. Three types of Cu-based wet sintered friction materials with different nickel silicide contents (0 wt%, 5 wt%, 10 wt%) were fabricated by the powder metallurgy route. The phase transformation of Ni2Si to Ni31Si12 was observed in nickel silicide after a sintering process. The friction coefficient and wear rate decreased with increasing nickel silicide content. The wear scar changed from ploughing to micro-cutting with increasing nickel silicide content. As a result, it is suggested that nickel silicide can be used as a friction modifier when added to Cu-based wet sintered friction materials.(Received June 17, 2021; Accepted November 22, 2021) |